The cascading domes and four slender minarets of the Imperial Suleymaniye Mosque dominate the skyline on the Golden Horn's west bank. Considered the most beautiful of all imperial mosques in Istanbul, it was built in between 1550 and 1557 by Sinan, the renowned architect of the Ottoman Empire's golden age. Erected on the crest of a hill, the building is conspicuous for its great size, emphasized by the four minarets that rise from each comer of the courtyard. Inside the mihrab (prayer niche showing the direction to Mecca) and the mimber (pulpit) are made of finely carved white marble and exquisite stained-glass windows, coloring the incoming streams of light. It was in the gardens of this complex that Suleyman and his wife, Hurrem Sultan (Roxelane), had their mausolea built, and near here also Sinan built his own tomb. The mosque complex also includes four medreses, or theological schools, a school of medicine, a caravanserai, a Turkish bath, and a kitchen and hospice for the poor.